People still show up at the docks every now and then. If you watch them.

[ So problems forcing them to relocate still exist, apparently. How did the original settlers know to go here, though? Or did they just ... set off for somewhere new, and hope for the best? ]

Might be the kind of information Lum members have better access to? There are parts of the Archives the public doesn't get to see as much. But they basically live there. Could ask. But maybe it was just practical.